Because of a lack of written language,
only two accounts of Incan Religion by Native American
authors are known to exist. Both authors wrote in the
second decade of the 17th century, in a mixture of Spanish
and native languages. Neither of the authors was ethnically
Incan, but both could trace their ancestry to tribes
that had been conquered by the Incas.
"Letter to a King", by Felipe
Guaman Poma de Ayala, is a 1200-page letter addressed
to the King of Spain. After being lost for nearly 300
years it was discovered in the royal library of Copenhagen,
The second work is "An Account of
the Antiquities of Peru", by Joan de Santacruz Pachacuti
Yamqui Salcamaygua, much of which is totally incomprehensible,
since the author was only semiliterate.